Combined water heater and circulator



(No Model.) I I T. R. CHASE.

COMBINED WATER HEATER AND GIRGULATOR. No. 366,074. Patented July 5, 1887.

m g N LS \/E (m UNITED STATES ATENT Erica.

THEODORE R. CHASE, OF DETROIT, MICHIGAN.

.COMBINED WATER HEATER AND CIRCULATOR.

SPECIFICATION forming part of Letters Patent No. 366,074, dated July 5, 1887.

Serial No. 199,112. (X0 model.)

T 0 (tZZ whom it may concern:

Be it known that I, THEODORE It. CHASE, a citizen ofthe United States, residing at Detroit, in the county of YVayne and State of Michigan, have invented certain new and useful Improvements in a Combined Water Heater and Circulator; and I do declare the following to be a full, clear, and exact description of the invention,such as will enable'others skilled in the art to which it appertain's to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention consists in certain new and useful improven'lents in the construction of a water heater and circulator, wherebya more complete distribution of the water is had, furnishing also a better heating-capacity, and by my present construction and attachment of the coiled heating-pipe within the boiler'I am e11- abled to locate a feed-door for fuel in the body of the boiler or shell below the coiled heatingpipes, thus dispensing with the common practice of putting the fuel in at the top end of the boiler. I also employ an auxiliary chamber having water-connection with the boiler, being also connected with the coiled heating-pipe within the boiler. From said chamber pass the heating or distributing pipes, which may pass to a room or apartment and be returned to the boiler, or pass through several rooms before returning to the boiler.

Heretofore the common practice has been to lead but one pipe from the boiler to various rooms, or all rooms to be heated, before returning it to the boiler; but by the use of the auxiliary chamber I am enabled to use a series of pipes having an independent connection and heating capacity, which will allow me to cut off the flow of hot water from any room or apartment not desired to be warmed. I also employ a set of auxiliary feed-pipes connecting the auxiliary chamber with the boiler, to give said chamber a large feeding capacity for the various distributing-pipes leading from said chamber.

The important elements of my invention will be hereinafter set forth, and pointed out in the claims.

In the drawings iorming a part of this specification, Figure l is a central longitudinal sec tion of an upright boiler (shown in perspec tive) containing my invention. enlarged top plan of the boiler, showing two coils of pipe located therein, one coil being lo cated within the other.

In the drawings, B is the boiler, which consists of an inner and outer shell, SS, in which WV W represent the headrings, through which the rivets pass, and G is the water-chamber, all of which parts are common.

0 is a sleeve or pipe,which I screw into the innershell of the boiler just below the upper head or ring \V. Said sleeveisserew-threaded at both ends.

P is a pipe,one end of which I attach to the sleeve 0 by means of the thimble t, which is provided with an internal right and left hand.

thread. One end of the thimble screws over the sleeve, the other over the pipe P, thus making atightconpling. The pipe P from this point of attachment is bent and extends downwardcentrally in the boiler, the lower point terminating on a horizontal line with the top of the door D of the boiler. It is then formed into a small coil, passing around the vertical portion. Each succeeding coil is formed larger than the one below it, the last coil terminating near the top of the boiler, the diameter of the top coil being nearly equal to that of the inner shell of the boiler. The free end of the coil passes over the top of the boiler through the outer shell, andby couplings e z is attached to the auxiliary chamber 0. By the enlargement of each succeeding coil from the bottom one upward each coil is exposed dircctly to the heat arising from the fire-grates 9, whereby the water passing from the boiler 13 through the coils is rapidly heated before it passes into the chamber 0. The chamber 0 is made of metal and is watertight. 'I attach to the outer shell, S, of the boiler a series of auxiliary pipes, at, by means of elbows e and couplings a, which also couple said pipes with the chamber 0. By this ar rangement I draw the hot water from the top of the boiler into the chamber in addition to the flow of water through the pipe P. I 10- eate in the pipes a a cut-off plug, 1;, whereby Fig. 2 is an comes rapidly heated, and as it passes through the coil of pipes P it is again subjected to'an intense heat before it passes out into the chamber O. WVhen it is desired to cut off the flow of .water from a room, the cut-off valve is turned in the pipe leadingto the apartment.

Any number of discharge-pipes F may be connected with the chamber, according to the number of rooms or space to be heated, and in such a case the auxiliary pipes n a assist in supplying the demand upon the chamber 0. I also design using two or more coiled pipes P, arranged one coil within the other. In Fig. 2 P P represent two of such coils and manner of attachingto the boiler, These coils may be connected to one auxiliary chamber,

or each coil may be independently connected to a chamber, having independent distributing-pipes. V A represents the apron or chute upon which the fuel-door D closes. Through said door the coal or fuel is passed to the grates. A is the ashpit, which is provided with a door for the removal of the ashes.

I have shown and described the auxiliary chamber 0 located outside of the boiler. I design in certain cases to locate it in the top end of the boiler directly over the coiled pipe P, and'connect said pipe with the chamber. The auxiliary pipes n n are connected to the chamber, and lead from the inner wall or shell of the boiler B. By locating the chamber in this position it is entirely out of sight and is kept warm by the current of heat passing up over it, which will prevent the cooling of the water in it, as would be more liable when located outside the boiler. The locating of the feeddoor D in the side of'the boiler instead of the top, as is common, allows me to locate the chamber 0 at this point. The upper end of the boiler is provided with the common cover or, hood, from the center of which the smokepipe arises.

Having thus what I claim as new, and desire to secure by Letters Patent, is

1. In combination with a boiler having an inner and an outer shell with water-space between them, and the auxiliary chamber 0,- the coiled pipe P, having one end opening through the inner shell only into the boiler and the other end communicating with said chamber, the auxiliary pipes a n, and a circulating pipe or pipes leading from the chamber 0 and returning to the boiler and entering the outer shell only of the boiler at or near the bottom, as and for the purposes set forth.

2. In combination with'a boiler having an inner and an outer shell with water-space between them, and an auxiliary chamber, a series'of coiled pipes, as P P, one end of each pipe opening through the inner shell only of the boiler into the waterspace thereof and their other ends communicating with said auxiliary chamber, the auxiliary pipes connecting the boiler to the chamber 0 and having the cut-off v, and distributingfpipes leading from said chamber and returning to the waterspace'of'the boiler through the outer shell thereoflhaving cut-off X,substantially as specified.

In testimony whereofI affix my signature in presence of two witnesses.

THEODORE It. CHASE.

Witnesses:

R. B. WHEELER, B. F. WHEELER.

fully set forth my invention, 

